Oil cylinder control valve for green storage header

Abstract

The application belongs to the technical field of oil cylinder and discloses a green storage machine header oil cylinder control valve, which comprises a valve body, a first oil inlet is formed in the valve body, a second oil inlet is formed in the valve body, a first hydraulic electromagnetic valve is arranged at one end of the valve body, a second hydraulic electromagnetic valve is arranged at the end of the valve body away from the first hydraulic electromagnetic valve, a first direction control valve is arranged on the side wall of the valve body close to the first hydraulic electromagnetic valve, a second direction control valve is arranged on the side wall of the valve body close to the first hydraulic electromagnetic valve, a third direction control valve is arranged on the side wall of the valve body close to the second hydraulic electromagnetic valve, a fourth direction control valve is arranged on the side wall of the valve body close to the second hydraulic electromagnetic valve, the third direction control valve is arranged on the valve body, and a throttle valve is arranged on the valve body. The application has the effect of reducing the limitation of the device.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder technology, and in particular to the hydraulic cylinder control valve of the silage harvester header. Background Technology

[0002] The hydraulic control valve of the silage harvester header cylinder is a key component in the hydraulic system. It is mainly used to control the movement of the header cylinder to realize functions such as lifting, folding and folding of the header.

[0003] Existing hydraulic cylinder control valves require multiple sets of multi-way valves to control two hydraulic cylinders. Furthermore, the valve core and valve body of existing technologies are fixed to each other, which can only match hydraulic cylinders of one displacement, thus increasing the limitations of the device. Utility Model Content

[0004] To solve the above problems, this utility model provides a hydraulic cylinder control valve for the cutting table of a silage harvester.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a hydraulic cylinder control valve for a silage harvester, comprising a valve body, a first oil inlet on the valve body, a second oil inlet on the valve body, a first hydraulic solenoid valve at one end of the valve body, a second hydraulic solenoid valve at the end of the valve body away from the first hydraulic solenoid valve, a first directional control valve on the side wall of the valve body near the first hydraulic solenoid valve, a second directional control valve on the side wall of the valve body near the first hydraulic solenoid valve, a third directional control valve on the side wall of the valve body near the second hydraulic solenoid valve, a fourth directional control valve on the side wall of the valve body near the second hydraulic solenoid valve, and a throttle valve on the valve body.

[0006] Furthermore, a first connector is provided on the side wall of the valve body near the first solenoid valve, a second connector is provided on the side wall of the valve body near the second hydraulic solenoid valve, and a third connector is provided on the side wall of the valve body near the second hydraulic solenoid valve.

[0007] By adopting the above technical solution, the two sets of hydraulic cylinders on the silage harvester's cutting platform need to operate in coordination. Workers connect the two sets of cylinders to the first, second, and third connectors. Then, the two outlet ports of the multi-way valve are connected to the first and second inlets on the valve body. At this point, the cylinders extend and retract by energizing or de-energizing the first and second hydraulic solenoid valves and their assembly. During this process, both sets of cylinders can be controlled by a single multi-way valve, thus improving the device's practicality. Furthermore, connectors of different diameters can be used to connect cylinders of different displacements, thereby reducing the device's limitations.

[0008] Furthermore, the valve body is provided with a connection hole, and the first connector, the second connector and the third connector are slidably connected to the connection hole. Multiple first mounting holes are arranged in a circumferential array on the inner wall of the connection hole, and multiple second mounting holes are arranged in a circumferential array on the outer wall of the first connector, the second connector and the third connector. A connecting ball is provided in the first mounting hole, and the connecting ball matches the second mounting hole.

[0009] By adopting the above technical solution, when the operator needs to connect the first connector to the valve body, the operator needs to slide the first connector into the connection hole, so that the first mounting hole and the second mounting hole are aligned. At this time, the operator moves one end of the mounting ball into the second mounting hole, so that the mounting ball fixes the first connecting ball in the connection hole, thereby connecting the first connector to the connection hole (the connection method between the second connectors is the same). When the first connector needs to be disassembled, the operator can separate the mounting ball from the second mounting hole to separate the first connector from the connection hole.

[0010] Furthermore, an annular hole is provided on the side wall of the valve body, the annular hole is connected to the first mounting hole, and a connecting ring is slidably disposed in the annular hole.

[0011] Furthermore, an avoidance groove is provided on the inner wall of the connecting ring.

[0012] By adopting the above technical solution, when one end of the mounting ball moves into the second mounting hole, the operator needs to slide the connecting ring so that the side wall of the connecting ring abuts against the outer wall of the mounting ball, thereby blocking the mounting ball and reducing the probability of the connecting ring and the mounting ball separating during use. Subsequently, when the operator needs to disassemble the first connector, the operator needs to slide the connecting ring so that the clearance groove is aligned with the mounting ball. At this time, the operator pulls out the first connector, and the connecting ring can no longer block the mounting ball, causing one end of the mounting ball to move into the clearance groove, thus separating the mounting hole from the second mounting hole. In this process, the connecting ring reduces the probability of the mounting ball and the second mounting hole separating during use, thereby improving the stability of the device.

[0013] Furthermore, a retaining spring is fixedly installed on the inner wall of the annular hole, and the other end of the retaining spring is fixedly installed on the side wall of the connecting ring.

[0014] By adopting the above technical solution, the clamping spring causes the connecting ring to slide automatically to block the installation ball, eliminating the need for manual sliding by the staff and thus reducing the difficulty of the work.

[0015] Furthermore, one end of the first connector, the second connector, and the third connector is chamfered.

[0016] By adopting the above technical solution, the chamfer reduces the probability that the operator will move the first connector into the connection hole and cause obstruction by aligning the mounting ball, thereby improving the stability of the device.

[0017] In summary, this utility model has the following beneficial effects:

[0018] 1. In this application, the two sets of hydraulic cylinders on the silage harvester's cutting platform need to operate in coordination. The operator connects the two sets of cylinders to the first, second, and third connectors. Then, the operator connects the two outlet ports of the multi-way valve to the first and second inlets on the valve body. At this point, the cylinders extend and retract through the energization or de-energization of the first and second hydraulic solenoid valves and their assembly. During this process, both sets of cylinders can be controlled by a single multi-way valve, thus improving the practicality of the device. Furthermore, connectors of different diameters can be used to connect cylinders of different displacements, thereby reducing the limitations of the device.

[0019] 2. In this application, when the operator needs to connect the first connector to the valve body, the operator needs to slide the first connector into the connection hole, so that the first mounting hole and the second mounting hole are aligned. At this time, the operator moves one end of the mounting ball into the second mounting hole, so that the mounting ball fixes the first connecting ball in the connection hole, thereby connecting the first connector to the connection hole (the connection method between the second connectors is the same). When the first connector needs to be disassembled, the operator can separate the mounting ball from the second mounting hole to separate the first connector from the connection hole.

[0020] 3. In this application, when one end of the mounting ball moves into the second mounting hole, the operator needs to slide the connecting ring so that the side wall of the connecting ring abuts against the outer wall of the mounting ball, thereby blocking the mounting ball and reducing the probability of the connecting ring and the mounting ball separating during use. Subsequently, when the operator needs to disassemble the first connector, the operator needs to slide the connecting ring so that the clearance groove is aligned with the mounting ball. At this time, the operator pulls out the first connector, and the connecting ring can no longer block the mounting ball, causing one end of the mounting ball to move into the clearance groove, thereby separating the mounting hole from the second mounting hole. In this process, the connecting ring reduces the probability of the mounting ball and the second mounting hole separating during use, thereby improving the stability of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model;

[0022] Figure 2 This is a schematic diagram of the structure of the first hydraulic solenoid valve in this embodiment of the present invention;

[0023] Figure 3This is a schematic diagram of the connection structure between the connector and the valve body in an embodiment of this utility model;

[0024] Figure 4 This is an oil circuit diagram in an embodiment of this utility model.

[0025] In the diagram: 1. Valve body; A1. First oil inlet; A2. Second oil inlet; 3.1. First hydraulic solenoid valve; 3.2. Second hydraulic solenoid valve; 2.1. First directional control valve; 4. Second directional control valve; 2.2. Third directional control valve; 5. Fourth directional control valve; 6. Throttle valve; C1. First connector; C2. Second connector; B2. Third connector; 7. Connecting hole; 71. First mounting hole; 72. Second mounting hole; 73. Connecting ball; 8. Annular hole; 81. Connecting ring; 82. Clearance groove; 83. Clamping spring; 9. Chamfer. Detailed Implementation

[0026] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0027] like Figure 1-4 As shown in the embodiment of this application, a hydraulic cylinder control valve for a silage harvester cutter is disclosed, including a valve body 1, a first oil inlet A1, a second oil inlet A2, a first hydraulic solenoid valve 3.1, a second hydraulic solenoid valve 3.2, a first directional control valve 2.1, a second directional control valve 4, a third directional control valve 2.2, a fourth directional control valve 5, a throttle valve 6, a first connector C1, a second connector C2, a third connector B2, a connecting ball 73, a connecting ring 81, and a retaining spring 83. The valve body 1 has a first oil inlet A1 and a second oil inlet A2. The first hydraulic solenoid valve 3.1 is located at one end of the valve body 1, and the second hydraulic solenoid valve 3.2 is located at the end of the valve body 1 away from the first hydraulic solenoid valve 3.1. The first directional control valve 2.1 is located on the side wall of the valve body 1 near the first hydraulic solenoid valve 3.1, and the second directional control valve 4 is located on the side wall of the valve body 1 near the first hydraulic solenoid valve 3.1. The third-direction control valve 2.2 is located on the side wall of valve body 1 near the second hydraulic solenoid valve 3.2, and the fourth-direction control valve 5 is located on the side wall of valve body 1 near the second hydraulic solenoid valve 3.2. A throttle valve 6 (not shown in the figure) is located on valve body 1.

[0028] The first connector C1 is located on the side wall of the valve body 1 near the first solenoid valve, the second connector C2 is located on the side wall of the valve body 1 near the second hydraulic solenoid valve 3.2, and the third connector B2 is located on the side wall of the valve body 1 near the second hydraulic solenoid valve 3.2.

[0029] The two sets of hydraulic cylinders on the silage harvester's cutting platform need to work in tandem. The operator connects the two sets of cylinders to the first connector C1, the second connector C2, and the third connector B2. Then, the operator connects the two outlet ports of the multi-way valve to the first inlet port A1 and the second inlet port A2 on the valve body 1. At this point, the cylinders extend and retract through the energization or de-energization of the first hydraulic solenoid valve 3.1 and the hydraulic solenoid valve assembly. During this process, both sets of cylinders can be controlled by a single multi-way valve, thus improving the device's practicality. Furthermore, different diameter connectors can be used to connect cylinders of different displacements, thereby reducing the device's limitations.

[0030] A connection hole 7 is provided on the valve body 1. The first connector C1, the second connector C2, and the third connector B2 are slidably connected to the connection hole 7. Multiple first mounting holes 71 are arranged in a circumferential array on the inner wall of the connection hole 7. Multiple second mounting holes 72 are arranged in a circumferential array on the outer wall of the first connector C1, the second connector C2, and the third connector B2. Multiple mounting balls are provided and are respectively disposed in the multiple first mounting holes 71. The connecting ball 73 is matched with the second mounting hole 72.

[0031] When the operator needs to connect the first connector C1 to the valve body 1, the operator needs to slide the first connector C1 into the connection hole 7, so that the first mounting hole 71 and the second mounting hole 72 are aligned. At this time, the operator moves one end of the mounting ball into the second mounting hole 72, so that the mounting ball fixes the first connecting ball 73 into the connection hole 7, thereby connecting the first connector to the connection hole 7 (the connection method between the second connectors is the same). When the first connector needs to be disassembled, the operator can separate the mounting ball from the second mounting hole 72 to separate the first connector from the connection hole 7.

[0032] An annular hole 8 is provided on the side wall of the valve body 1, and the annular hole 8 communicates with the first mounting hole 71. The connecting ring 81 is a circular ring structure with its axis horizontal. The connecting ring 81 is slidably disposed in the annular block, and a relief groove 82 is provided on the inner wall of the connecting ring 81.

[0033] When one end of the mounting ball moves into the second mounting hole 72, the operator needs to slide the connecting ring 81 so that the side wall of the connecting ring 81 abuts against the outer wall of the mounting ball, thereby blocking the mounting ball and reducing the probability of the connecting ring 81 separating from the mounting ball during use. Subsequently, when the operator needs to disassemble the first connector, the operator needs to slide the connecting ring 81 so that the clearance groove 82 is aligned with the mounting ball. At this time, the operator pulls out the first connector, and the connecting ring 81 can no longer block the mounting ball, causing one end of the mounting ball to move into the clearance groove 82, thereby separating the mounting hole from the second mounting hole 72. In this process, the connecting ring 81 reduces the probability of the mounting ball separating from the second mounting hole 72 during use, thereby improving the stability of the device.

[0034] One end of the clamping spring 83 is fixedly mounted on the inner wall of the annular hole 8, and the other end of the clamping spring 83 is fixedly mounted on the side wall of the connecting ring 81.

[0035] The clamping spring 83 causes the connecting ring 81 to slide automatically to block the mounting ball, eliminating the need for manual sliding by the operator and thus reducing the difficulty of the operator's work.

[0036] To improve the stability of the device, one end of the first connector C1, the second connector C2, and the third connector B2 is provided with a chamfer 9. The chamfer 9 reduces the probability of obstruction caused by the operator moving the first connector into the connection hole 7 to align the mounting ball, thereby improving the stability of the device.

[0037] In this embodiment, the operating principle of the hydraulic cylinder control valve on the silage harvester header is as follows: The two sets of hydraulic cylinders on the silage harvester header need to operate in coordination. The operator connects the two sets of cylinders to the first connector C1, the second connector C2, and the third connector B2. Then, the operator connects the two outlet ports of the multi-way valve to the first inlet port A1 and the second inlet port A2 on the valve body 1. At this time, the cylinder extension and retraction are achieved by energizing or de-energizing the first hydraulic solenoid valve 3.1 and the hydraulic solenoid valve assembly. During this process, both sets of cylinders can be controlled by a single multi-way valve, thus improving the practicality of the device. Furthermore, different diameter connectors can be used to connect cylinders of different displacements, thereby reducing the limitations of the device.

[0038] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A hydraulic cylinder control valve for a silage harvester header, comprising a valve body (1), characterized in that: The valve body (1) has a first oil inlet (A1) and a second oil inlet (A2). A first hydraulic solenoid valve (3.1) is provided at one end of the valve body (1), and a second hydraulic solenoid valve (3.2) is provided at the end of the valve body (1) away from the first hydraulic solenoid valve (3.1). A first directional control valve (2.1) is provided on the side wall of the valve body (1) near the first hydraulic solenoid valve (3.1). A second directional control valve (4) is provided on the side wall of the valve body (1) near the first hydraulic solenoid valve (3.1). A third directional control valve (2.2) is provided on the side wall of the valve body (1) near the second hydraulic solenoid valve (3.2). A fourth directional control valve (5) is provided on the side wall of the valve body (1) near the second hydraulic solenoid valve (3.2). A third directional control valve (2.2) is provided on the valve body (1). A throttle valve (6) is provided on the valve body (1).

2. The hydraulic cylinder control valve for the silage harvester header according to claim 1, characterized in that: The valve body (1) has a first connector (C1) on the side wall near the first solenoid valve, a second connector (C2) on the side wall near the second hydraulic solenoid valve (3.2), and a third connector (B2) on the side wall near the second hydraulic solenoid valve (3.2).

3. The control valve for the hydraulic cylinder of the silage harvester header according to claim 2, characterized in that: The valve body (1) is provided with a connection hole (7). The first connector (C1), the second connector (C2) and the third connector (B2) are slidably connected to the connection hole (7). The inner wall of the connection hole (7) is provided with a plurality of first mounting holes (71) arranged in a circumferential array. The outer walls of the first connector (C1), the second connector (C2) and the third connector (B2) are provided with a plurality of second mounting holes (72) arranged in a circumferential array. A connecting ball (73) is provided in the first mounting hole (71). The connecting ball (73) matches the second mounting hole (72).

4. The hydraulic cylinder control valve for the silage harvester header according to claim 3, characterized in that: An annular hole (8) is provided on the side wall of the valve body (1). The annular hole (8) is connected to the first mounting hole (71). A connecting ring (81) is slidably disposed in the annular hole (8).

5. The control valve for the hydraulic cylinder of the silage harvester header according to claim 4, characterized in that: The inner wall of the connecting ring (81) is provided with a clearance groove (82).

6. The hydraulic cylinder control valve for the silage harvester header according to claim 4, characterized in that: A retaining spring (83) is fixedly installed on the inner wall of the annular hole (8), and the other end of the retaining spring (83) is fixedly installed on the side wall of the connecting ring (81).

7. The control valve for the hydraulic cylinder of the silage harvester header according to claim 2, characterized in that: One end of the first connector (C1), the second connector (C2), and the third connector (B2) is provided with a chamfer (9).

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